London is built on layers of its own past. Occasionally they poke through to the present, like the old Roman walls and the Temple of Mithras. Now two current construction projects have revealed glimpses of the city’s previous epochs.

Work to build a leisure center at Elephant and Castle has uncovered some 500 medieval skeletons, the London Evening Standard reports. They were interred in 25 crypts. It appears they were relocated into the crypts in 1875 to accommodate a widening of the road but date as far back as the early 14th century. Now new construction dictates they’ll have to be reinterred again. Not even the dead get to rest long in London!

Another project creating a new tunnel for Crossrail at Plumstead has uncovered a much older transport system, the BBC reports. Archaeologists believe timbers they’ve discovered at the site are part of a 3,500-year-old Bronze Age trackway.

These wooden roads were used to ease travel across rough areas, especially wetlands. Similar trackways have been found in many locations in the UK and continental Europe. The odd thing about this one is that it runs along the same route as the new Crossrail route.

One great place to explore London’s history is the Museum of London. The British Museum has good galleries about prehistoric, Roman and Medieval England. The Crossrail Visitor Information Centre also has an archaeology exhibit until October 27 showing off some of their discoveries. The finds range from the prehistoric to the Industrial Revolution, although these latest finds are still being analyzed and will not be on display.

[Image of 15th century funeral procession at the Old St. Paul’s cathedral courtesy Project Gutenberg]